Incandescent gas-burner.



Int/enter,- B,%

- llifo rney.

No. 723,667. A. GROSSMANN.

INGANDESGENT GAS BURNER.

APPLICATION FILED D30. 23, 1902.

H0 MODEL.

ms warms co mom LIYNO witnesses:

Xf,%W/4/ UNITED STATES PATENT OFFICE.

ALFRED GROSSMANN, OF LEIPZ IG, GERMANY.

INCANDESCENTGAS-BURNER.

SPECIFICATION forming part of Letters Patent No. 723,667, dated March24, 1903.

Application filed Decemher'23, 1902. Serial No. 136,337. (No model.)

T0 at whom it may concern:

Be it known that I, ALFRED GROSSMANN, merchant, a subject of the Princeof Schwarzburg-Rudolstadt, residing at 35 Kantstrasse, in the city ofLeipzig, Germany, have invented new and useful Improvements inIncandescent Gas-Burners, of which the following is a specification.

My invention relates to a simple construction of incandescentgas-burners the gassupply of which can be regulated in a simple manner.

According to my invention I use a burner in the base of which there isan aperture closed by cone. Around this aperture there are one or moresupplemental gas-passages. I have found that this kind of knowngasburner does not fulfil the object which I have in view name1y, toregulate the heatingfiame in such a manner that incandescent mantles ofnearly any height may be used on the same burner. If, however, I modifysuch a burner in such a way that the openings through which the airpasses into the mixingtube are arranged in the horizontal plate whichcarries the mixing-tube or upon which the latter is fastened, so thatthe air has no deflection whatever, I am enabled to regulate the flameso that it will evenly lighten with a mantle of the common size or witha mantle of a double height and more.

In the accompanying drawings, Figure l is an elevation of themixing-tube, partly in section. Fig. 2 is the section in the directionof the line A A of Fig. 1. I

In one example of a burner according to this invention the gasn0zzle a,which is provided with a thread I), by which it' can be screwed upon agas-bracket or the like, has an enternally-screw-threaded upper portion,upon which is screwed an internally-threaded chamber and a closed upperend it, formed as a cone and having arranged around or near its base oneor 'more lateral openings 0 for the admission of gas to the interior ofthe chamber (1. In the top of the chamber are a number of smallerapertures e, arranged in a circle around a larger central aperture f,which when the chamber is screwed upon the nozzle is more or lessclosed-by the conical upper end 72. of the nozzle; The smaller aperturese are so fine that they do not in general supply a quantity of gassuflicient for a small burner.

The chamber d, as already stated, is internally threaded so that it canbe screwed upon the nozzle a, and it is combined with a plate 11, whichcarries a Bunsen mixing-tube g. This plate has openings is, throughwhich the air passes into the mixing-tube without being deflected.Additional lateral openings m may be'provided in the mixing-tube toadmit further quantities of air; but this is generally unuecessary, asexperience has proved that sufficient air is supplied through theopenings k in the plate 11 already referred to. By the rotation of thisplate '5 the chamber cl is caused to rise or fall in relation to thenozzle a, and the cone h is caused to regulate the opening of the largeraperture fin the top of the chamber. The gas normally enters themixing-tube not only through the smaller. apertures e, but also through'the larger aperture f, an'dby the rotation of the plate 2' the quantityof gas passing through the larger aperture can be easily regulated. Inorder to avoid accidental rotation of this plate t', a spring n isarranged between it and the nozzle and bears against them both.

It will easily be seen that the gas supplied to the mixing-tube will, asusual, be mixed therein with the air entering through the apertures inthis tube before it passes to the head of the burner.

- In case the burner is used for acetylene gas the incandescent-mantlemay be directly arranged above the tube g, and no burner-head will beused.

It is essential that the point of the cone h does'not fully pass throughthe aperturef.

Having now particularly described and ascertained the invention, Ideclare that what I claim is 2. An incandescent gas-burner having agas-supply nozzle, a horizontal plate or member with anupwardly-extending gas-chamber adjustable vertically on said nozzlewhich introduces the gas therein and provided in its upper end with agas-passage through which the gas is Supplied to the mixing-chamber, avalve mounted upon said nozzle and cooperatingwith the said gas-passageto regulate the flow of gas through the same, a mixing-chamber locatedabove said horizontal member and suitable air-inlets for supplying theair thereto, a spring arranged between the said horizontal member orplate and the said nozzle for preventing accidental rotation of saidmember, substantially as and for the purpose set forth.

3. An incandescent gas-burner provided with a gas and air mixing chamberhaving a gas-passage for supplying the gas to said chamber, a conehaving its apex adapted to project into said gas-passage and the twosaid parts being relatively adjustable and so related that the apex ofthe cone is always below the upper end of said gas-passage to regulatethe supply of gas, and one or more air-inlets for introducing air in anupward vertical direction into the mixing-chamber and at a point belowthe said gas-passage whereby there is practically no deflection of theair thus introduced into the mixing-chamber, substantially as and forthe purpose set forth.

4:. An incandescent gas-burner provided with a gas and air mixingchamber having a gas-passage for supplying the gas to said chamber, acone having its apex adapted to project into said gas-passage and thetwo said parts being relatively adjustable and so related that the apexof the cone is always below the upper end of said gas-passage toregulate the supply of gas, and one or more airinlets for introducingair in an upward vertical direction into the mixing-chamber and at apoint below said gas-passage whereby there is no deflection of the airthus introduced into the mixing-chamber, and additional air-inletslocated in the side of said mixing-chamber, substantially as and for thepurpose set forth.

5. An incandescent gas-burner consisting in the combination of agas-nozzle a, a valve mounted upon the upper end of said nozzle, amember '5 provided with an upwardly-extending gas-chamber d fitting oversaid nozzle and vertically adjustable thereon and having in the upperpart of said gas chamber a gas-passage f and supplemental gas-aperturese, the said valve carried by the nozzle a cooperating with thegas-passage to regulate the flow of gas, a mixing-chamber located abovesaid member 1', and suitable air-inlets for introducing the air into thelower part of said mixing-chamber, substantially as and for the purposeset forth.

6. An incandescent gas-burner consisting in the combination of agas-nozzle a, a conevalve h mounted upon the upper end of said nozzle, amember 2 provided with an up- Wardly-extending gas-chamber d fittingover said nozzle and vertically adjustable thereon and havingin theupper part ofsaid gas-chamher a gas-passage f with which the said valveon the upper end of said nozzle coooperates to regulate the flow of gas,a mixing-chamber located above said member 2', and the said plated beingprovided with upwardly-extending openings It for supplying airin avertical direction to the said mixing-chamber whereby there ispractically no deflection of the air thus introduced into themixing-chamber, substantially as and for the purpose set forth.

7. An incandescent gas-burner comprising a gas-nozzle provided at itsupper end with a cone, a mixing-tube provided with a bottom plate havinga gas-passage therein and vertically adjustable on said nozzle, the saidcone and gas-passage being so related that the apex of the cone isalways below the upper end of said gas-passage, and one or more inletsin said bottom plate for admitting the air directly into saidmixing-tube, substantially as and for the purpose set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ALFRED GROSSMANN.

Witnesses:

PAUL E. SOHILLING, PAUL AREAS.

